Hengyang kitchen waste resource utilization and harmless treatment project started construction on October 17, 2015, and officially entered commercial operation on December 21, 2018. The project covers a total area of about 46 acres, with a total investment of 137.01 million yuan, the construction scale of Hengyang kitchen project is 120 tons/day, and the actual operation scale in 2021 is 133 tons/day.

The project construction content for the collection and transportation system, pretreatment system, anaerobic digestion system, biogas purification and purification system, biogas residue composting system, water treatment system, odor treatment system; project process: the use of “pretreatment + high-temperature anaerobic digestion” process route, in strict accordance with the environmental requirements, and effectively put an end to the garbage pigs and gutter oil back to the table, and effectively safeguard the people's food hygiene and sanitation. It effectively eliminates the return of garbage pigs and gutter oil to the dining table, and effectively maintains the food hygiene and safety of the people. The company also ploughs into the ecological recycling industry, accelerates the extension of the industrial chain, focuses on more efficient resource utilization of kitchen waste, and further realizes industrial value-added.